Thank you dear chramer!
First of all, it is not work on that site. (dont know why). But it is seems to work, becouse you defined all colors in css. I see your point of view. I have found this solution too, but is not exacle what I need. I will received color like this '#FF0000' in store. Thats why using css is not posible (I think so). And then user will have the ability to change row color on the fle using color picker. Color picker here http://www.sencha.com/forum/showthread.php?134576-Ext.ux.AdvancedColorPicker i have found (fix some minor errors) and it works good.